add script and config files
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12
msmtprc
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12
msmtprc
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@@ -0,0 +1,12 @@
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defaults
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auth on
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tls on
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tls_trust_file /etc/ssl/certs/ca-certificates.crt
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logfile /var/log/msmtp.log
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account default
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host smtp.dein-anbieter.de
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port 587
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from deine-email@beispiel.de
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user dein-benutzername
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password dein-passwort
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@@ -1,54 +1,88 @@
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#!/bin/bash
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# Datei für den Status
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STATE_FILE="watch_state.json"
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# Liste der zu prüfenden Quellen (Typ|Name|Zusatz)
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# Formate:
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# DOCKER|user/repo|tag
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# GITHUB|user/repo|branch
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TARGETS=(
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"DOCKER|library/ubuntu|latest"
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"DOCKER|grafana/grafana|9.5.0"
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"GITHUB|docker/cli|master"
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"GITHUB|torvalds/linux|master"
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)
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# Pfade definieren
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CONFIG_DIR="/config"
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CONFIG_FILE="$CONFIG_DIR/watchdog.conf"
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STATE_FILE="$CONFIG_DIR/watch_state.json"
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# Falls jq nicht installiert ist
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if ! command -v jq &> /dev/null; then echo "Bitte 'jq' installieren!"; exit 1; fi
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# 1. Prüfen, ob das Config-Verzeichnis existiert
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if [ ! -d "$CONFIG_DIR" ]; then
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echo "Fehler: Verzeichnis $CONFIG_DIR nicht gefunden!"
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exit 1
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fi
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# Initialisiere State-Datei falls nicht vorhanden
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if [ ! -f "$STATE_FILE" ]; then echo "{}" > "$STATE_FILE"; fi
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# 2. Config laden
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if [ -f "$CONFIG_FILE" ]; then
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source "$CONFIG_FILE"
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else
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echo "Fehler: $CONFIG_FILE nicht gefunden!"
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exit 1
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fi
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# 3. msmtp Konfiguration dynamisch schreiben
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# (Nutzt die Variablen aus der watchdog.conf)
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cat <<EOF > /etc/msmtprc
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defaults
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auth on
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tls on
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tls_trust_file /etc/ssl/certs/ca-certificates.crt
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logfile /var/log/msmtp.log
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account default
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host $SMTP_HOST
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port $SMTP_PORT
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from $EMAIL_FROM
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user $SMTP_USER
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password $SMTP_PASS
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EOF
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chmod 600 /etc/msmtprc
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# 4. State-Datei initialisieren falls nötig
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if [ ! -f "$STATE_FILE" ] || [ ! -s "$STATE_FILE" ]; then
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echo "{}" > "$STATE_FILE"
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fi
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UPDATES_FOUND=""
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# --- Logik-Schleife ---
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for entry in "${TARGETS[@]}"; do
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IFS="|" read -r TYPE REPO EXTRA <<< "$entry"
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# Key-Generierung (Punkte und Slashes durch Unterstrich ersetzen)
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KEY="${TYPE}_${REPO//[\/\.]/_}_${EXTRA}"
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OLD_VAL=$(jq -r ".${KEY} // empty" "$STATE_FILE")
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# Alten Wert aus der JSON im /config/ Ordner lesen
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OLD_VAL=$(jq -r ".[\"$KEY\"] // empty" "$STATE_FILE")
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NEW_VAL=""
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if [ "$TYPE" == "DOCKER" ]; then
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# Holt das letzte Update-Datum vom Docker Hub
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NEW_VAL=$(curl -s "https://hub.docker.com/v2/repositories/${REPO}/tags/${EXTRA}" | jq -r '.last_updated // empty')
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elif [ "$TYPE" == "GITHUB" ]; then
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# Holt den neuesten Commit-SHA vom GitHub Branch
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NEW_VAL=$(curl -s "https://api.github.com/repos/${REPO}/branches/${EXTRA}" | jq -r '.commit.sha // empty')
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fi
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# Validierung der API-Antwort
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if [ -z "$NEW_VAL" ] || [ "$NEW_VAL" == "null" ]; then
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echo "Fehler: Konnte Daten für $REPO ($EXTRA) nicht abrufen."
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echo "⚠️ Konnte Daten für $REPO ($EXTRA) nicht abrufen."
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continue
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fi
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# Vergleich
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if [ -n "$OLD_VAL" ] && [ "$OLD_VAL" != "$NEW_VAL" ]; then
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echo "🔔 UPDATE GEFUNDEN: $REPO ($EXTRA)"
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echo " Alt: $OLD_VAL"
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echo " Neu: $NEW_VAL"
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# HIER: Befehl für E-Mail oder Push-Dienst einfügen
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MSG="Update für $REPO ($EXTRA)! Alt: $OLD_VAL | Neu: $NEW_VAL"
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echo "🔔 $MSG"
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UPDATES_FOUND="${UPDATES_FOUND}${MSG}\n"
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else
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echo "✅ $REPO ($EXTRA) ist aktuell."
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fi
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# Status aktualisieren
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TEMP_JSON=$(jq ".${KEY} = \"$NEW_VAL\"" "$STATE_FILE")
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# Neuen Wert in die JSON im /config/ Ordner schreiben
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TEMP_JSON=$(jq ".[\"$KEY\"] = \"$NEW_VAL\"" "$STATE_FILE")
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echo "$TEMP_JSON" > "$STATE_FILE"
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done
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# 5. Mail versenden, falls Updates gefunden wurden
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if [ -n "$UPDATES_FOUND" ]; then
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echo -e "Subject: Watchdog Alert - Neue Versionen gefunden\nFrom: $EMAIL_FROM\nTo: $EMAIL_TO\n\nFolgende Änderungen wurden erkannt:\n\n$UPDATES_FOUND" | msmtp "$EMAIL_TO"
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echo "Info: Benachrichtigung an $EMAIL_TO versendet."
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fi
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6
watch_state.json
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6
watch_state.json
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@@ -0,0 +1,6 @@
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{
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"DOCKER_library_ubuntu_latest": "2026-01-19T00:04:34.988138Z",
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"DOCKER_grafana_grafana_9.5.0": "2023-04-26T06:56:09.639877Z",
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"GITHUB_docker_cli_master": "727bc3ea5b2cccf0d1ef77d7049848851e973477",
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"GITHUB_torvalds_linux_master": "b7ff7151e653aa296ab6c5495b2c1ab7c21eb250"
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}
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16
watchdog.conf
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16
watchdog.conf
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@@ -0,0 +1,16 @@
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# E-Mail Einstellungen
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EMAIL_TO="empfaenger@beispiel.de"
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EMAIL_FROM="watchdog@dein-server.de"
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# Quellen (Format: TYPE|REPO|EXTRA)
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TARGETS=(
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"DOCKER|library/ubuntu|latest"
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"DOCKER|grafana/grafana|9.5.0"
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"GITHUB|docker/cli|master"
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)
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# SMTP Einstellungen für msmtp
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SMTP_HOST="smtp.dein-anbieter.de"
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SMTP_PORT="587"
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SMTP_USER="dein-benutzername"
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SMTP_PASS="dein-passwort"
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